... EXPERIMENTS AND RESEARCHES . ... located inside Soyuz TMA-6 is an integrated GNSS receiver for space applications able to determine position and time using GPS signals. ... Measurement and verification of the GPS and EGNOS signals in Low Earth Orbit. ... Verify the performances obtainable by a GPS/EGNOS receiver . Perform a PVT measurement using a combined GPS/EGNOS receiver during the different phases of the mission and compare the obtained results with the equivalent data from the spacecraft . ...